ZLV Online

Winter hillslope runoff was studied in two young stads regenerated 25 years ago by clearcut (H) and shelterwood (C) method and in a control mature spruce stand (K) on the Česká Čermná long-run research area, steeply sloped southward, during the dormant season 2005/2006. In the term November 1 – April 30, snow represented 75% of 360 mm of open area precipitation. Thawing from March 24 to March 30-April 3 corresponded with diverse water storage in snowpack: the highest 172 mm on the plot C (mixed conifer small pole stage stand with considerable proportion of European larch in winter without needles), the lower 153 mm on the plot K (mature spruce stand) and lowest 80 mm on the plot H (spruce pole stage stand). The most lateral surface and subsurface runoff from snowmelt was observed on the plot H (11 mm); at non-recorded frost temperatures of soil, we could link it with greater floor compaction indicated by penetrometer. On the contrary, the significantly greatest vertical flow on the plot C together with small lateral flow showed good infiltration ability of soil at regeneration by shelterwood cutting with created mixed conifer stand. Likewise in summer also in winter the lateral runoff on highlead yarding track 25 years after logging did not significantly differ from that on undamaged plots, so we can consider hazard of soil erosion by water to be low.